a powder produced by the male part of a flower , which is carried by insects or the wind and causes the female part of the same type of flower to produce seeds
发音
例句
1. Hummingbirds have discovered that nectar and pollen are very nutritious. 蜂鸟发现花蜜和花粉是很有营养的。 2. He developed an allergy to pollen. 他对花粉过敏。